20109333 has 4 divisors (see below), whose sum is σ = 26812448. Its totient is φ = 13406220.

The previous prime is 20109319. The next prime is 20109343. The reversal of 20109333 is 33390102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20109333 - 2¹³ = 20101141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20109343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3351553 + ... + 3351558.

It is an arithmetic number, because the mean of its divisors is an integer number (6703112).

Almost surely, 2^20109333 is an apocalyptic number.

It is an amenable number.

20109333 is a deficient number, since it is larger than the sum of its proper divisors (6703115).

20109333 is an equidigital number, since it uses as much as digits as its factorization.

20109333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6703114.

The product of its (nonzero) digits is 486, while the sum is 21.

The square root of 20109333 is about 4484.3430957053. The cubic root of 20109333 is about 271.9354887738.

Adding to 20109333 its reverse (33390102), we get a palindrome (53499435).

The spelling of 20109333 in words is "twenty million, one hundred nine thousand, three hundred thirty-three".